Ice Friction and Physics
By: Nathaniel Adams and Heather Morgan
Two Types
FAST ICE
SLOW ICE
Hard and Smooth
Soft and Warm
Is actually made out of salt water Made with 8 to 10 thin layers of water In all the ice is only 1 inch thick
The zamboni is a machine that maintains the ice It cleans the ice It scrapes the ice and then lays another layer of warm water to freeze
Three Types
Figure Skates
Figure skates have slightly longer blades in the back of the shoe to allow for tricks. Hockey Skates
Hockey skates have shorter blades to allow for quick turning and faster stops.
Speed Skates
Speed skates have a lot longer blades to have more contact with the ice and to have maximum speed.
To see if the coefficient of kinetic friction on ice would greatly differ if the two subjects had different masses.
Our hypothesis was that the person with the most mass would have more kinetic friction.
To do the experiment, we started skating at the same time and we stopped applying force at the same time. Theoretically the person with the less mass goes further with more time. The person with the most mass will go shorter with less time.
After we had glided to a stop we measured the distance that we had coasted and the time that it had taken us to do it.
After this data had been collected we tested a variety of shoes on the ice including, sneakers, flip flops, and dress shoes. The purpose of this was to prove that ice skates are the most efficient way to skate on ice.
After we collected the data for the ice skates we calculated the deceleration for each trial.
A=-2d/t2 We found that our hypothesis was proved wrong by our scientific investigation. Our data showed that even with the small mass difference between us that it didn’t affect the deceleration of the skates on the ice.
Heather’s Average Deceleration: -0.17 m/s2 Nathaniel’s Average Deceleration: -0.17 m/s2
•Slick Tennis Shoes
•Treaded Tennis Shoes
•Flip Flops •Dress Shoes
Greatest Amount of Deceleration: Slick Tennis Shoes
Least Amount of Deceleration: Dress Shoes
Http://www.britannica.com/eb/article?eu=42916&tocid=0
Http://www.exploatorium.edu/hockey/ice1.h tml
“Physics on Ice” by Liz Woolard, Enloe High School, Raleigh, NC 27610
North Carolina State University Raleigh Ice Plex Burroughs Wellcome Fund
Rosemary Stallings Ashely Harris Tya McGrue Nathan Black The Science of Sports Campers
University Towers Beth Snoke Liz Woolard Luke Esposito
Thanks for a great two weeks!!!!